/* ==========================================================================
   WPF Simulator - "When Pigs Fly" Physics Simulator
   Retro/8-bit UI shell with multi-theme support
   ========================================================================== */

/* --------------------------------------------------------------------------
   Font Face (self-hosted Silkscreen pixel font)
   -------------------------------------------------------------------------- */
@font-face {
    font-family: 'Silkscreen';
    src: url('../fonts/Silkscreen-Regular.ttf') format('truetype');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}
@font-face {
    font-family: 'Silkscreen';
    src: url('../fonts/Silkscreen-Bold.ttf') format('truetype');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

/* --------------------------------------------------------------------------
   CSS Custom Properties (defaults = retro theme, overridden by themes.js)
   -------------------------------------------------------------------------- */
:root {
    /* Core palette */
    --bg-base: #0d0d14;
    --bg-panel: #14141f;
    --bg-surface: #1a1a28;
    --bg-elevated: #222234;
    --bg-input: #0f0f1a;
    --bg-hover: #252540;
    --bg-active: #1a1a30;
    --border: #2a2a3a;
    --border-light: #3a3a50;

    /* Text */
    --text-primary: #e0e0e8;
    --text-dim: #7a7a90;
    --text-muted: #44445a;

    /* Accents */
    --accent: #00e5ff;
    --accent-dim: rgba(0, 229, 255, 0.15);
    --accent-glow: rgba(0, 229, 255, 0.35);
    --secondary: #ff3860;
    --secondary-dim: rgba(255, 56, 96, 0.15);
    --tertiary: #39ff14;
    --tertiary-dim: rgba(57, 255, 20, 0.15);

    /* Retro */
    --pixel-border: #3a3a50;
    --pixel-shadow: #000000;

    /* Canvas */
    --canvas-bg: #0a0a0f;
    --canvas-grid: #1a1a2a;
    --canvas-grid-major: #222236;

    /* Typography */
    --font-pixel: 'Silkscreen', monospace;
    --font-system: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', 'Fira Code', monospace;
    --font-ui: var(--font-pixel);  /* switches based on theme */

    /* Sizing */
    --header-h: 40px;
    --toolbar-h: 44px;
    --statusbar-h: 28px;
    --left-panel-w: 260px;

    /* Retro shared */
    --btn-radius: 0px;
    --panel-radius: 0px;
    --bevel-light: rgba(255, 255, 255, 0.12);
    --bevel-dark: rgba(0, 0, 0, 0.4);

    /* Misc */
    --shadow-dropdown: 4px 4px 0 rgba(0, 0, 0, 0.5);
    --shadow-modal: 6px 6px 0 rgba(0, 0, 0, 0.6);
    --transition-fast: 0.1s ease;
    --transition-med: 0.2s ease;
}

/* Smooth themes override retro corners */
.theme-smooth {
    --btn-radius: 6px;
    --panel-radius: 8px;
    --font-ui: var(--font-system);
    --shadow-dropdown: 0 8px 32px rgba(0, 0, 0, 0.55), 0 2px 8px rgba(0, 0, 0, 0.35);
    --shadow-modal: 0 24px 80px rgba(0, 0, 0, 0.7), 0 4px 16px rgba(0, 0, 0, 0.4);
    --bevel-light: transparent;
    --bevel-dark: transparent;
}

/* Terminal theme forces monospace everywhere */
.theme-monospace {
    --font-ui: var(--font-mono);
}

/* --------------------------------------------------------------------------
   Reset & Base
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html,
body {
    height: 100%;
    overflow: hidden;
    background: var(--bg-base);
    color: var(--text-primary);
    font-family: var(--font-ui);
    font-size: 13px;
    line-height: 1.4;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Theme transition (not on initial load — added by JS after first paint) */
.theme-transitioning,
.theme-transitioning *,
.theme-transitioning *::before,
.theme-transitioning *::after {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease !important;
}

/* --------------------------------------------------------------------------
   App Grid Layout (4 rows: header, toolbar, main, status)
   -------------------------------------------------------------------------- */
#app {
    display: grid;
    grid-template-rows: var(--header-h) var(--toolbar-h) 1fr var(--statusbar-h);
    grid-template-columns: var(--left-panel-w) 1fr;
    grid-template-areas:
        "header   header"
        "toolbar  toolbar"
        "left     canvas"
        "status   status";
    height: 100dvh;
    width: 100vw;
}

/* --------------------------------------------------------------------------
   Brand Header
   -------------------------------------------------------------------------- */
#brand-header {
    grid-area: header;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-h);
    padding: 0 16px;
    background: var(--bg-panel);
    border-bottom: 2px solid var(--pixel-border);
    box-shadow: inset 0 -1px 0 var(--bevel-dark);
    user-select: none;
    z-index: 200;
}

.brand-left {
    display: flex;
    align-items: center;
    gap: 10px;
}

.brand-icon {
    flex-shrink: 0;
}

.brand-title {
    font-family: var(--font-pixel);
    font-size: 14px;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.brand-slogan {
    font-family: var(--font-system);
    font-size: 11px;
    font-style: italic;
    color: var(--text-dim);
    letter-spacing: 0.5px;
    opacity: 0.8;
    padding-left: 8px;
    border-left: 1px solid var(--border);
}

.brand-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.brand-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: 2px solid var(--pixel-border);
    border-radius: var(--btn-radius);
    background: var(--bg-surface);
    color: var(--text-dim);
    cursor: pointer;
    box-shadow:
        inset -2px -2px 0 var(--bevel-dark),
        inset 2px 2px 0 var(--bevel-light);
    transition: color var(--transition-fast), background var(--transition-fast);
}

.brand-btn:hover {
    color: var(--accent);
    background: var(--bg-hover);
}

.brand-btn:active {
    box-shadow:
        inset 2px 2px 0 var(--bevel-dark),
        inset -2px -2px 0 var(--bevel-light);
    transform: translate(1px, 1px);
}

/* --------------------------------------------------------------------------
   Settings Flyout
   -------------------------------------------------------------------------- */
#settings-flyout {
    position: fixed;
    top: var(--header-h);
    right: 0;
    width: 240px;
    max-height: calc(100dvh - var(--header-h) - var(--statusbar-h));
    background: var(--bg-panel);
    border-left: 2px solid var(--pixel-border);
    border-bottom: 2px solid var(--pixel-border);
    box-shadow: var(--shadow-dropdown);
    z-index: 500;
    overflow-y: auto;
    animation: flyout-in 0.15s ease;
}

@keyframes flyout-in {
    from { opacity: 0; transform: translateX(12px); }
    to   { opacity: 1; transform: translateX(0); }
}

.settings-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
}

.settings-title {
    font-family: var(--font-pixel);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent);
}

.settings-close-btn {
    width: 24px;
    height: 24px;
    border: 1px solid var(--border);
    border-radius: var(--btn-radius);
    background: transparent;
    color: var(--text-dim);
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.settings-close-btn:hover {
    color: var(--secondary);
    background: var(--secondary-dim);
}

.settings-section {
    padding: 12px;
}

.settings-label {
    display: block;
    font-family: var(--font-pixel);
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-dim);
    margin-bottom: 8px;
}

/* Theme swatches grid */
.theme-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
}

.theme-swatch {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 8px 4px;
    border: 2px solid var(--border);
    border-radius: var(--btn-radius);
    background: var(--bg-surface);
    cursor: pointer;
    transition: border-color var(--transition-fast);
}

.theme-swatch:hover {
    border-color: var(--text-dim);
}

.theme-swatch.active {
    border-color: var(--accent);
    box-shadow: 0 0 8px var(--accent-glow);
}

.theme-colors {
    display: flex;
    gap: 3px;
}

.theme-dot {
    width: 12px;
    height: 12px;
    border-radius: 2px;
    border: 1px solid rgba(255,255,255,0.1);
}

.theme-swatch-name {
    font-family: var(--font-pixel);
    font-size: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-dim);
}

/* --------------------------------------------------------------------------
   Toolbar
   -------------------------------------------------------------------------- */
#toolbar {
    grid-area: toolbar;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 0 10px;
    height: var(--toolbar-h);
    background: var(--bg-panel);
    border-bottom: 2px solid var(--pixel-border);
    box-shadow: inset 0 -1px 0 var(--bevel-dark);
    z-index: 100;
    user-select: none;
    overflow-x: auto;
    overflow-y: hidden;
}

.toolbar-group {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 0 4px;
    flex-shrink: 0;
}

.toolbar-separator {
    width: 1px;
    height: 20px;
    background: var(--border-light);
    margin: 0 2px;
    flex-shrink: 0;
}

.toolbar-label {
    font-family: var(--font-ui);
    font-size: 9px;
    color: var(--text-dim);
    white-space: nowrap;
    margin-right: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.toolbar-value {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-primary);
    min-width: 36px;
    text-align: center;
}

/* Tool buttons (icon buttons in toolbar) */
.tool-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border: 2px solid var(--pixel-border);
    border-radius: var(--btn-radius);
    background: var(--bg-surface);
    color: var(--text-dim);
    font-size: 15px;
    cursor: pointer;
    box-shadow:
        inset -2px -2px 0 var(--bevel-dark),
        inset 2px 2px 0 var(--bevel-light);
    transition: background var(--transition-fast),
                color var(--transition-fast),
                border-color var(--transition-fast);
}

.tool-btn:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--text-dim);
}

.tool-btn:active {
    box-shadow:
        inset 2px 2px 0 var(--bevel-dark),
        inset -2px -2px 0 var(--bevel-light);
    transform: translate(1px, 1px);
}

.tool-btn.active {
    background: var(--accent);
    color: #fff;
    border-color: var(--accent);
    box-shadow: 0 0 8px var(--accent-glow),
        inset -2px -2px 0 rgba(0,0,0,0.2),
        inset 2px 2px 0 rgba(255,255,255,0.15);
}

/* Stopwatch buttons */
.stopwatch-btn {
    width: auto;
    padding: 0 10px;
    font-family: var(--font-ui);
    font-size: 9px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Speed slider in toolbar */
#speed-slider {
    width: 90px;
    margin: 0 4px;
}

/* Environment select */
#env-select {
    height: 28px;
    min-width: 100px;
}

/* --------------------------------------------------------------------------
   Toggle Labels (toolbar checkboxes)
   -------------------------------------------------------------------------- */
label.toggle-label {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-family: var(--font-ui);
    font-size: 9px;
    color: var(--text-dim);
    cursor: pointer;
    user-select: none;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: color var(--transition-fast);
}

label.toggle-label:hover {
    color: var(--text-primary);
}

label.toggle-label input[type="checkbox"] {
    position: relative;
    width: 28px;
    height: 14px;
    appearance: none;
    -webkit-appearance: none;
    background: var(--bg-elevated);
    border: 2px solid var(--pixel-border);
    border-radius: var(--btn-radius);
    cursor: pointer;
    transition: background var(--transition-fast),
                border-color var(--transition-fast);
}

label.toggle-label input[type="checkbox"]::after {
    content: '';
    position: absolute;
    top: 1px;
    left: 1px;
    width: 8px;
    height: 8px;
    border-radius: var(--btn-radius);
    background: var(--text-dim);
    transition: transform var(--transition-fast),
                background var(--transition-fast);
}

label.toggle-label input[type="checkbox"]:checked {
    background: var(--accent-dim);
    border-color: var(--accent);
}

label.toggle-label input[type="checkbox"]:checked::after {
    transform: translateX(14px);
    background: var(--accent);
}

/* --------------------------------------------------------------------------
   Left Panel
   -------------------------------------------------------------------------- */
#left-panel {
    grid-area: left;
    display: flex;
    flex-direction: column;
    gap: 4px;
    width: var(--left-panel-w);
    background: var(--bg-panel);
    border-right: 2px solid var(--pixel-border);
    box-shadow: inset -1px 0 0 var(--bevel-dark);
    overflow-y: auto;
    overflow-x: hidden;
    padding: 10px;
    user-select: none;
}

/* Panel section headings */
h3.panel-heading {
    font-family: var(--font-pixel);
    font-size: 9px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: var(--accent);
    margin: 10px 0 6px;
    padding: 4px 8px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--btn-radius);
}

h3.panel-heading:first-child {
    margin-top: 0;
}

/* Tool grid */
.tool-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 5px;
    margin-bottom: 6px;
}

.tool-grid-measure {
    grid-template-columns: repeat(2, 1fr);
}

.tool-grid .tool-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    width: 100%;
    aspect-ratio: 1 / 1;
    max-height: 64px;
    border: 2px solid var(--pixel-border);
    border-radius: var(--btn-radius);
    background: var(--bg-surface);
    color: var(--text-dim);
    font-size: 18px;
    cursor: pointer;
    box-shadow:
        inset -2px -2px 0 var(--bevel-dark),
        inset 2px 2px 0 var(--bevel-light);
    transition: background var(--transition-fast),
                color var(--transition-fast),
                border-color var(--transition-fast);
}

.tool-grid .tool-item span {
    font-family: var(--font-pixel);
    font-size: 7px;
    font-weight: 400;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    line-height: 1;
}

.tool-grid .tool-item:hover {
    border-color: var(--text-dim);
    color: var(--text-primary);
    background: var(--bg-hover);
}

.tool-grid .tool-item:active {
    box-shadow:
        inset 2px 2px 0 var(--bevel-dark),
        inset -2px -2px 0 var(--bevel-light);
    transform: translate(1px, 1px);
}

.tool-grid .tool-item.active {
    background: var(--accent-dim);
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: 0 0 10px var(--accent-dim),
        inset -2px -2px 0 rgba(0,0,0,0.15),
        inset 2px 2px 0 rgba(255,255,255,0.08);
}

/* --------------------------------------------------------------------------
   Properties Panel
   -------------------------------------------------------------------------- */
#properties-panel,
#force-properties-panel {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 10px;
    background: var(--bg-surface);
    border: 2px solid var(--pixel-border);
    border-radius: var(--panel-radius);
    box-shadow:
        inset -1px -1px 0 var(--bevel-dark),
        inset 1px 1px 0 var(--bevel-light);
    margin-top: 4px;
}

.prop-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    min-height: 26px;
}

.prop-row label {
    flex-shrink: 0;
    font-family: var(--font-ui);
    font-size: 9px;
    color: var(--text-dim);
    white-space: nowrap;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.prop-row input[type="number"] {
    width: 58px;
    height: 24px;
    padding: 0 4px;
    border: 2px solid var(--pixel-border);
    border-radius: var(--btn-radius);
    background: var(--bg-input);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 11px;
    text-align: right;
    outline: none;
    transition: border-color var(--transition-fast);
}

.prop-row input[type="number"]:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent-dim);
}

.prop-row input[type="number"]::-webkit-inner-spin-button,
.prop-row input[type="number"]::-webkit-outer-spin-button {
    opacity: 0.5;
}

.prop-row input[type="color"] {
    width: 28px;
    height: 28px;
    padding: 2px;
    border: 2px solid var(--pixel-border);
    border-radius: var(--btn-radius);
    background: var(--bg-input);
    cursor: pointer;
}

.prop-row input[type="color"]:hover {
    border-color: var(--text-dim);
}

.prop-row input[type="color"]::-webkit-color-swatch-wrapper {
    padding: 1px;
}

.prop-row input[type="color"]::-webkit-color-swatch {
    border: none;
    border-radius: 1px;
}

.prop-row select {
    flex: 1;
    min-width: 0;
    height: 24px;
    font-size: 11px;
}

/* Button row */
.btn-row {
    display: flex;
    gap: 5px;
    margin-top: 4px;
    padding-top: 8px;
    border-top: 1px solid var(--border);
}

/* Small buttons */
.btn-sm {
    flex: 1;
    height: 26px;
    padding: 0 8px;
    border: 2px solid var(--pixel-border);
    border-radius: var(--btn-radius);
    background: var(--bg-surface);
    color: var(--text-dim);
    font-family: var(--font-ui);
    font-size: 9px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    white-space: nowrap;
    box-shadow:
        inset -1px -1px 0 var(--bevel-dark),
        inset 1px 1px 0 var(--bevel-light);
    transition: background var(--transition-fast),
                color var(--transition-fast),
                border-color var(--transition-fast);
}

.btn-sm:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--text-dim);
}

.btn-sm:active {
    box-shadow:
        inset 1px 1px 0 var(--bevel-dark),
        inset -1px -1px 0 var(--bevel-light);
    transform: translate(1px, 1px);
}

.btn-danger {
    border-color: rgba(255, 56, 96, 0.4);
    color: var(--secondary);
}

.btn-danger:hover {
    background: var(--secondary-dim);
    color: var(--secondary);
    border-color: var(--secondary);
}

/* --------------------------------------------------------------------------
   Scenes Dropdown
   -------------------------------------------------------------------------- */
.scenes-dropdown-wrap {
    position: relative;
}

.scenes-trigger {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    height: 34px;
    padding: 0 10px;
    border: 2px solid var(--pixel-border);
    border-radius: var(--btn-radius);
    background: var(--bg-surface);
    color: var(--text-dim);
    font-family: var(--font-ui);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    box-shadow:
        inset -2px -2px 0 var(--bevel-dark),
        inset 2px 2px 0 var(--bevel-light);
    transition: background var(--transition-fast),
                color var(--transition-fast),
                border-color var(--transition-fast);
}

.scenes-trigger:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--text-dim);
}

.scenes-trigger:active {
    box-shadow:
        inset 2px 2px 0 var(--bevel-dark),
        inset -2px -2px 0 var(--bevel-light);
}

.scenes-dropdown {
    position: fixed;
    width: 230px;
    max-height: 400px;
    overflow-y: auto;
    background: var(--bg-panel);
    border: 2px solid var(--pixel-border);
    border-radius: var(--btn-radius);
    box-shadow: var(--shadow-dropdown);
    z-index: 600;
    animation: dropdown-in 0.12s ease;
}

@keyframes dropdown-in {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

.scenes-category {
    padding: 4px 0;
}

.scenes-category + .scenes-category {
    border-top: 1px solid var(--border);
}

.scenes-cat-label {
    display: block;
    padding: 4px 10px 2px;
    font-family: var(--font-pixel);
    font-size: 8px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent);
    opacity: 0.7;
}

.scenes-dropdown .scene-btn {
    display: flex;
    align-items: center;
    width: 100%;
    height: 30px;
    padding: 0 12px;
    border: none;
    background: transparent;
    color: var(--text-dim);
    font-family: var(--font-ui);
    font-size: 10px;
    text-align: left;
    cursor: pointer;
    text-transform: none;
    letter-spacing: 0;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.scenes-dropdown .scene-btn:hover {
    background: var(--accent-dim);
    color: var(--accent);
}

.scenes-dropdown .scene-btn:active {
    background: var(--accent);
    color: #fff;
}

/* --------------------------------------------------------------------------
   Canvas Container
   -------------------------------------------------------------------------- */
#canvas-container {
    grid-area: canvas;
    position: relative;
    overflow: hidden;
    background: var(--canvas-bg);
}

canvas#sim-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: block;
}

.canvas-hint {
    position: absolute;
    bottom: 12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 14px;
    background: var(--bg-panel);
    border: 2px solid var(--pixel-border);
    border-radius: var(--btn-radius);
    color: var(--text-dim);
    font-family: var(--font-ui);
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    pointer-events: none;
    transition: opacity var(--transition-med);
    z-index: 5;
}

.canvas-hint.hidden {
    opacity: 0;
}

/* --------------------------------------------------------------------------
   Status Bar
   -------------------------------------------------------------------------- */
#status-bar {
    grid-area: status;
    display: flex;
    align-items: center;
    height: var(--statusbar-h);
    padding: 0 12px;
    gap: 0;
    background: var(--bg-panel);
    border-top: 2px solid var(--pixel-border);
    box-shadow: inset 0 1px 0 var(--bevel-light);
    font-family: var(--font-mono);
    font-size: 10px;
    color: var(--text-dim);
    user-select: none;
    z-index: 100;
}

.status-item {
    display: inline-flex;
    align-items: center;
    white-space: nowrap;
    padding: 0 8px;
}

.status-sep {
    color: var(--border-light);
    font-size: 10px;
}

/* Sim time reset button — blends into status bar */
.status-reset-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: auto;
    padding: 0 4px;
    margin-left: 4px;
    border: none;
    border-radius: 0;
    background: transparent;
    color: var(--text-muted);
    font-family: var(--font-mono);
    font-size: 10px;
    cursor: pointer;
    transition: color var(--transition-fast);
}

.status-reset-btn:hover {
    color: var(--secondary);
}

/* Blinking PAUSED indicator */
#status-paused {
    font-family: var(--font-pixel);
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

@keyframes blink-paused {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* Only blink when actually paused (controlled by JS class) */
#status-paused.is-paused {
    animation: blink-paused 1.2s steps(1) infinite;
    color: var(--secondary);
}

#status-paused.is-running {
    color: var(--tertiary);
}

/* --------------------------------------------------------------------------
   Context Menu
   -------------------------------------------------------------------------- */
#context-menu {
    position: absolute;
    z-index: 1000;
    min-width: 160px;
    padding: 4px 0;
    background: var(--bg-panel);
    border: 2px solid var(--pixel-border);
    border-radius: var(--btn-radius);
    box-shadow: var(--shadow-dropdown);
    overflow: hidden;
    animation: ctx-fade-in 0.1s ease;
}

@keyframes ctx-fade-in {
    from { opacity: 0; transform: translateY(-4px); }
    to   { opacity: 1; transform: translateY(0); }
}

.ctx-item {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 6px 12px;
    border: none;
    background: transparent;
    color: var(--text-primary);
    font-family: var(--font-ui);
    font-size: 10px;
    text-align: left;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.ctx-item:hover {
    background: var(--accent);
    color: #fff;
}

.ctx-separator {
    height: 1px;
    margin: 4px 8px;
    background: var(--border);
}

/* --------------------------------------------------------------------------
   Modal Overlay
   -------------------------------------------------------------------------- */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 5000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.7);
    animation: modal-overlay-in 0.15s ease;
}

@keyframes modal-overlay-in {
    from { opacity: 0; }
    to   { opacity: 1; }
}

.modal-content {
    position: relative;
    width: 90%;
    max-width: 480px;
    max-height: 80vh;
    background: var(--bg-panel);
    border: 3px solid var(--pixel-border);
    border-radius: var(--panel-radius);
    box-shadow: var(--shadow-modal);
    overflow-y: auto;
    animation: modal-content-in 0.2s ease;
}

@keyframes modal-content-in {
    from { opacity: 0; transform: scale(0.96) translateY(8px); }
    to   { opacity: 1; transform: scale(1) translateY(0); }
}

/* Retro modal title bar */
.modal-titlebar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    background: var(--bg-surface);
    border-bottom: 2px solid var(--pixel-border);
    font-family: var(--font-pixel);
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent);
}

.modal-close-x {
    width: 22px;
    height: 22px;
    border: 2px solid var(--pixel-border);
    border-radius: var(--btn-radius);
    background: var(--bg-surface);
    color: var(--text-dim);
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow:
        inset -1px -1px 0 var(--bevel-dark),
        inset 1px 1px 0 var(--bevel-light);
}

.modal-close-x:hover {
    color: var(--secondary);
    border-color: var(--secondary);
}

.modal-content textarea {
    width: calc(100% - 24px);
    min-height: 120px;
    margin: 12px;
    padding: 10px;
    border: 2px solid var(--pixel-border);
    border-radius: var(--btn-radius);
    background: var(--bg-input);
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 11px;
    resize: vertical;
    outline: none;
    transition: border-color var(--transition-fast);
}

.modal-content textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent-dim);
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 6px;
    padding: 0 12px 12px;
}

.btn-modal {
    padding: 6px 16px;
    border: 2px solid var(--pixel-border);
    border-radius: var(--btn-radius);
    background: var(--bg-surface);
    color: var(--text-dim);
    font-family: var(--font-ui);
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    box-shadow:
        inset -1px -1px 0 var(--bevel-dark),
        inset 1px 1px 0 var(--bevel-light);
    transition: background var(--transition-fast),
                color var(--transition-fast),
                border-color var(--transition-fast);
}

.btn-modal:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--text-dim);
}

.btn-modal:active {
    box-shadow:
        inset 1px 1px 0 var(--bevel-dark),
        inset -1px -1px 0 var(--bevel-light);
    transform: translate(1px, 1px);
}

.btn-modal.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.btn-modal.btn-primary:hover {
    filter: brightness(1.1);
}

/* --------------------------------------------------------------------------
   Range Input (global)
   -------------------------------------------------------------------------- */
input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    height: 6px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--btn-radius);
    outline: none;
    cursor: pointer;
}

input[type="range"]::-webkit-slider-runnable-track {
    height: 6px;
    background: transparent;
    border-radius: var(--btn-radius);
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    margin-top: -4px;
    background: var(--accent);
    border: 2px solid var(--bg-panel);
    border-radius: var(--btn-radius);
    box-shadow: 0 0 4px var(--accent-glow);
    cursor: pointer;
    transition: transform var(--transition-fast),
                box-shadow var(--transition-fast);
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.15);
    box-shadow: 0 0 8px var(--accent-glow);
}

input[type="range"]::-moz-range-track {
    height: 6px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--btn-radius);
}

input[type="range"]::-moz-range-thumb {
    width: 14px;
    height: 14px;
    background: var(--accent);
    border: 2px solid var(--bg-panel);
    border-radius: var(--btn-radius);
    box-shadow: 0 0 4px var(--accent-glow);
    cursor: pointer;
}

input[type="range"]:focus {
    outline: none;
}

.prop-row input[type="range"] {
    flex: 1;
    min-width: 0;
}

/* --------------------------------------------------------------------------
   Select Dropdown (global)
   -------------------------------------------------------------------------- */
select {
    appearance: none;
    -webkit-appearance: none;
    padding: 4px 24px 4px 8px;
    border: 2px solid var(--pixel-border);
    border-radius: var(--btn-radius);
    background: var(--bg-surface) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%237a7a90'/%3E%3C/svg%3E") no-repeat right 6px center;
    color: var(--text-primary);
    font-family: var(--font-ui);
    font-size: 10px;
    outline: none;
    cursor: pointer;
    box-shadow:
        inset -1px -1px 0 var(--bevel-dark),
        inset 1px 1px 0 var(--bevel-light);
    transition: border-color var(--transition-fast);
}

select:hover {
    border-color: var(--text-dim);
}

select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent-dim);
}

select option {
    background: var(--bg-panel);
    color: var(--text-primary);
}

/* --------------------------------------------------------------------------
   Help Modal
   -------------------------------------------------------------------------- */
.help-content {
    max-width: 560px;
}

.shortcut-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    padding: 12px;
}

.shortcut-section h4 {
    font-family: var(--font-pixel);
    font-size: 9px;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent);
    margin-bottom: 8px;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--border);
}

.shortcut-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 3px 0;
    font-family: var(--font-ui);
    font-size: 10px;
    color: var(--text-dim);
}

.shortcut-row kbd {
    display: inline-block;
    padding: 2px 6px;
    background: var(--bg-surface);
    border: 2px solid var(--pixel-border);
    border-radius: var(--btn-radius);
    font-family: var(--font-mono);
    font-size: 9px;
    color: var(--text-primary);
    min-width: 24px;
    text-align: center;
    box-shadow:
        inset -1px -1px 0 var(--bevel-dark),
        inset 1px 1px 0 var(--bevel-light);
}

/* --------------------------------------------------------------------------
   Scrollbar
   -------------------------------------------------------------------------- */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border-light);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

* {
    scrollbar-width: thin;
    scrollbar-color: var(--border-light) transparent;
}

/* --------------------------------------------------------------------------
   Utility Classes
   -------------------------------------------------------------------------- */
.hidden {
    display: none !important;
}

.text-accent { color: var(--accent); }
.text-secondary { color: var(--secondary); }
.text-tertiary { color: var(--tertiary); }
.text-dim { color: var(--text-dim); }

/* --------------------------------------------------------------------------
   Focus Visible
   -------------------------------------------------------------------------- */
:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

button:focus:not(:focus-visible),
input:focus:not(:focus-visible),
select:focus:not(:focus-visible) {
    outline: none;
}

/* --------------------------------------------------------------------------
   Toast
   -------------------------------------------------------------------------- */
.toast {
    position: fixed;
    bottom: 48px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 6000;
    padding: 6px 16px;
    background: var(--bg-elevated);
    border: 2px solid var(--pixel-border);
    border-radius: var(--btn-radius);
    color: var(--text-primary);
    font-family: var(--font-ui);
    font-size: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: var(--shadow-dropdown);
    pointer-events: none;
    animation: toast-in 0.2s ease, toast-out 0.3s ease 2.5s forwards;
}

@keyframes toast-in {
    from { opacity: 0; transform: translateX(-50%) translateY(8px); }
    to   { opacity: 1; transform: translateX(-50%) translateY(0); }
}

@keyframes toast-out {
    from { opacity: 1; transform: translateX(-50%) translateY(0); }
    to   { opacity: 0; transform: translateX(-50%) translateY(8px); }
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 900px) {
    .brand-slogan { display: none; }
    :root { --left-panel-w: 220px; }
}

@media (max-width: 768px) {
    #app {
        grid-template-columns: 1fr;
        grid-template-rows: var(--header-h) var(--toolbar-h) 1fr var(--statusbar-h);
        grid-template-areas:
            "header"
            "toolbar"
            "canvas"
            "status";
    }

    #left-panel { display: none; }
    .brand-slogan { display: none; }
    .brand-title { font-size: 11px; }
}